diff options
Diffstat (limited to 'drivers/infiniband/core/verbs.c')
| -rw-r--r-- | drivers/infiniband/core/verbs.c | 377 |
1 files changed, 349 insertions, 28 deletions
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index af7a8b08b2e9..602b1bd723a9 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -38,7 +38,9 @@ #include <linux/errno.h> #include <linux/err.h> +#include <linux/export.h> #include <linux/string.h> +#include <linux/slab.h> #include <rdma/ib_verbs.h> #include <rdma/ib_cache.h> @@ -77,6 +79,31 @@ enum ib_rate mult_to_ib_rate(int mult) } EXPORT_SYMBOL(mult_to_ib_rate); +int ib_rate_to_mbps(enum ib_rate rate) +{ + switch (rate) { + case IB_RATE_2_5_GBPS: return 2500; + case IB_RATE_5_GBPS: return 5000; + case IB_RATE_10_GBPS: return 10000; + case IB_RATE_20_GBPS: return 20000; + case IB_RATE_30_GBPS: return 30000; + case IB_RATE_40_GBPS: return 40000; + case IB_RATE_60_GBPS: return 60000; + case IB_RATE_80_GBPS: return 80000; + case IB_RATE_120_GBPS: return 120000; + case IB_RATE_14_GBPS: return 14062; + case IB_RATE_56_GBPS: return 56250; + case IB_RATE_112_GBPS: return 112500; + case IB_RATE_168_GBPS: return 168750; + case IB_RATE_25_GBPS: return 25781; + case IB_RATE_100_GBPS: return 103125; + case IB_RATE_200_GBPS: return 206250; + case IB_RATE_300_GBPS: return 309375; + default: return -1; + } +} +EXPORT_SYMBOL(ib_rate_to_mbps); + enum rdma_transport_type rdma_node_get_transport(enum rdma_node_type node_type) { @@ -250,6 +277,13 @@ struct ib_srq *ib_create_srq(struct ib_pd *pd, srq->uobject = NULL; srq->event_handler = srq_init_attr->event_handler; srq->srq_context = srq_init_attr->srq_context; + srq->srq_type = srq_init_attr->srq_type; + if (srq->srq_type == IB_SRQT_XRC) { + srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; + srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq; + atomic_inc(&srq->ext.xrc.xrcd->usecnt); + atomic_inc(&srq->ext.xrc.cq->usecnt); + } atomic_inc(&pd->usecnt); atomic_set(&srq->usecnt, 0); } @@ -279,16 +313,29 @@ EXPORT_SYMBOL(ib_query_srq); int ib_destroy_srq(struct ib_srq *srq) { struct ib_pd *pd; + enum ib_srq_type srq_type; + struct ib_xrcd *uninitialized_var(xrcd); + struct ib_cq *uninitialized_var(cq); int ret; if (atomic_read(&srq->usecnt)) return -EBUSY; pd = srq->pd; + srq_type = srq->srq_type; + if (srq_type == IB_SRQT_XRC) { + xrcd = srq->ext.xrc.xrcd; + cq = srq->ext.xrc.cq; + } ret = srq->device->destroy_srq(srq); - if (!ret) + if (!ret) { atomic_dec(&pd->usecnt); + if (srq_type == IB_SRQT_XRC) { + atomic_dec(&xrcd->usecnt); + atomic_dec(&cq->usecnt); + } + } return ret; } @@ -296,28 +343,123 @@ EXPORT_SYMBOL(ib_destroy_srq); /* Queue pairs */ +static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) +{ + struct ib_qp *qp = context; + + list_for_each_entry(event->element.qp, &qp->open_list, open_list) + event->element.qp->event_handler(event, event->element.qp->qp_context); +} + +static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) +{ + mutex_lock(&xrcd->tgt_qp_mutex); + list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); + mutex_unlock(&xrcd->tgt_qp_mutex); +} + +static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, + void (*event_handler)(struct ib_event *, void *), + void *qp_context) +{ + struct ib_qp *qp; + unsigned long flags; + + qp = kzalloc(sizeof *qp, GFP_KERNEL); + if (!qp) + return ERR_PTR(-ENOMEM); + + qp->real_qp = real_qp; + atomic_inc(&real_qp->usecnt); + qp->device = real_qp->device; + qp->event_handler = event_handler; + qp->qp_context = qp_context; + qp->qp_num = real_qp->qp_num; + qp->qp_type = real_qp->qp_type; + + spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); + list_add(&qp->open_list, &real_qp->open_list); + spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); + + return qp; +} + +struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, + struct ib_qp_open_attr *qp_open_attr) +{ + struct ib_qp *qp, *real_qp; + + if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) + return ERR_PTR(-EINVAL); + + qp = ERR_PTR(-EINVAL); + mutex_lock(&xrcd->tgt_qp_mutex); + list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { + if (real_qp->qp_num == qp_open_attr->qp_num) { + qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, + qp_open_attr->qp_context); + break; + } + } + mutex_unlock(&xrcd->tgt_qp_mutex); + return qp; +} +EXPORT_SYMBOL(ib_open_qp); + struct ib_qp *ib_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *qp_init_attr) { - struct ib_qp *qp; + struct ib_qp *qp, *real_qp; + struct ib_device *device; - qp = pd->device->create_qp(pd, qp_init_attr, NULL); + device = pd ? pd->device : qp_init_attr->xrcd->device; + qp = device->create_qp(pd, qp_init_attr, NULL); if (!IS_ERR(qp)) { - qp->device = pd->device; - qp->pd = pd; - qp->send_cq = qp_init_attr->send_cq; - qp->recv_cq = qp_init_attr->recv_cq; - qp->srq = qp_init_attr->srq; - qp->uobject = NULL; - qp->event_handler = qp_init_attr->event_handler; - qp->qp_context = qp_init_attr->qp_context; - qp->qp_type = qp_init_attr->qp_type; - atomic_inc(&pd->usecnt); - atomic_inc(&qp_init_attr->send_cq->usecnt); - atomic_inc(&qp_init_attr->recv_cq->usecnt); - if (qp_init_attr->srq) - atomic_inc(&qp_init_attr->srq->usecnt); + qp->device = device; + qp->real_qp = qp; + qp->uobject = NULL; + qp->qp_type = qp_init_attr->qp_type; + + if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { + qp->event_handler = __ib_shared_qp_event_handler; + qp->qp_context = qp; + qp->pd = NULL; + qp->send_cq = qp->recv_cq = NULL; + qp->srq = NULL; + qp->xrcd = qp_init_attr->xrcd; + atomic_inc(&qp_init_attr->xrcd->usecnt); + INIT_LIST_HEAD(&qp->open_list); + atomic_set(&qp->usecnt, 0); + + real_qp = qp; + qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, + qp_init_attr->qp_context); + if (!IS_ERR(qp)) + __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); + else + real_qp->device->destroy_qp(real_qp); + } else { + qp->event_handler = qp_init_attr->event_handler; + qp->qp_context = qp_init_attr->qp_context; + if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { + qp->recv_cq = NULL; + qp->srq = NULL; + } else { + qp->recv_cq = qp_init_attr->recv_cq; + atomic_inc(&qp_init_attr->recv_cq->usecnt); + qp->srq = qp_init_attr->srq; + if (qp->srq) + atomic_inc(&qp_init_attr->srq->usecnt); + } + + qp->pd = pd; + qp->send_cq = qp_init_attr->send_cq; + qp->xrcd = NULL; + + atomic_inc(&pd->usecnt); + atomic_inc(&qp_init_attr->send_cq->usecnt); + } } return qp; @@ -326,8 +468,8 @@ EXPORT_SYMBOL(ib_create_qp); static const struct { int valid; - enum ib_qp_attr_mask req_param[IB_QPT_RAW_ETHERTYPE + 1]; - enum ib_qp_attr_mask opt_param[IB_QPT_RAW_ETHERTYPE + 1]; + enum ib_qp_attr_mask req_param[IB_QPT_MAX]; + enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { [IB_QPS_RESET] = { [IB_QPS_RESET] = { .valid = 1 }, @@ -343,6 +485,12 @@ static const struct { [IB_QPT_RC] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), + [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | + IB_QP_PORT | + IB_QP_ACCESS_FLAGS), + [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | + IB_QP_PORT | + IB_QP_ACCESS_FLAGS), [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | @@ -365,6 +513,12 @@ static const struct { [IB_QPT_RC] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), + [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | + IB_QP_PORT | + IB_QP_ACCESS_FLAGS), + [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | + IB_QP_PORT | + IB_QP_ACCESS_FLAGS), [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | @@ -384,6 +538,16 @@ static const struct { IB_QP_RQ_PSN | IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER), + [IB_QPT_XRC_INI] = (IB_QP_AV | + IB_QP_PATH_MTU | + IB_QP_DEST_QPN | + IB_QP_RQ_PSN), + [IB_QPT_XRC_TGT] = (IB_QP_AV | + IB_QP_PATH_MTU | + IB_QP_DEST_QPN | + IB_QP_RQ_PSN | + IB_QP_MAX_DEST_RD_ATOMIC | + IB_QP_MIN_RNR_TIMER), }, .opt_param = { [IB_QPT_UD] = (IB_QP_PKEY_INDEX | @@ -394,6 +558,12 @@ static const struct { [IB_QPT_RC] = (IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX), + [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | + IB_QP_ACCESS_FLAGS | + IB_QP_PKEY_INDEX), + [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | + IB_QP_ACCESS_FLAGS | + IB_QP_PKEY_INDEX), [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | @@ -414,6 +584,13 @@ static const struct { IB_QP_RNR_RETRY | IB_QP_SQ_PSN | IB_QP_MAX_QP_RD_ATOMIC), + [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | + IB_QP_RETRY_CNT | + IB_QP_RNR_RETRY | + IB_QP_SQ_PSN | + IB_QP_MAX_QP_RD_ATOMIC), + [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | + IB_QP_SQ_PSN), [IB_QPT_SMI] = IB_QP_SQ_PSN, [IB_QPT_GSI] = IB_QP_SQ_PSN, }, @@ -429,6 +606,15 @@ static const struct { IB_QP_ACCESS_FLAGS | IB_QP_MIN_RNR_TIMER | IB_QP_PATH_MIG_STATE), + [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | + IB_QP_ALT_PATH | + IB_QP_ACCESS_FLAGS | + IB_QP_PATH_MIG_STATE), + [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | + IB_QP_ALT_PATH | + IB_QP_ACCESS_FLAGS | + IB_QP_MIN_RNR_TIMER | + IB_QP_PATH_MIG_STATE), [IB_QPT_SMI] = (IB_QP_CUR_STATE | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_CUR_STATE | @@ -453,6 +639,15 @@ static const struct { IB_QP_ALT_PATH | IB_QP_PATH_MIG_STATE | IB_QP_MIN_RNR_TIMER), + [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | + IB_QP_ACCESS_FLAGS | + IB_QP_ALT_PATH | + IB_QP_PATH_MIG_STATE), + [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | + IB_QP_ACCESS_FLAGS | + IB_QP_ALT_PATH | + IB_QP_PATH_MIG_STATE | + IB_QP_MIN_RNR_TIMER), [IB_QPT_SMI] = (IB_QP_CUR_STATE | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_CUR_STATE | @@ -465,6 +660,8 @@ static const struct { [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, + [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, + [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY } @@ -487,6 +684,15 @@ static const struct { IB_QP_ACCESS_FLAGS | IB_QP_MIN_RNR_TIMER | IB_QP_PATH_MIG_STATE), + [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | + IB_QP_ALT_PATH | + IB_QP_ACCESS_FLAGS | + IB_QP_PATH_MIG_STATE), + [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | + IB_QP_ALT_PATH | + IB_QP_ACCESS_FLAGS | + IB_QP_MIN_RNR_TIMER | + IB_QP_PATH_MIG_STATE), [IB_QPT_SMI] = (IB_QP_CUR_STATE | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_CUR_STATE | @@ -515,6 +721,25 @@ static const struct { IB_QP_PKEY_INDEX | IB_QP_MIN_RNR_TIMER | IB_QP_PATH_MIG_STATE), + [IB_QPT_XRC_INI] = (IB_QP_PORT | + IB_QP_AV | + IB_QP_TIMEOUT | + IB_QP_RETRY_CNT | + IB_QP_RNR_RETRY | + IB_QP_MAX_QP_RD_ATOMIC | + IB_QP_ALT_PATH | + IB_QP_ACCESS_FLAGS | + IB_QP_PKEY_INDEX | + IB_QP_PATH_MIG_STATE), + [IB_QPT_XRC_TGT] = (IB_QP_PORT | + IB_QP_AV | + IB_QP_TIMEOUT | + IB_QP_MAX_DEST_RD_ATOMIC | + IB_QP_ALT_PATH | + IB_QP_ACCESS_FLAGS | + IB_QP_PKEY_INDEX | + IB_QP_MIN_RNR_TIMER | + IB_QP_PATH_MIG_STATE), [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | @@ -579,7 +804,7 @@ int ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, int qp_attr_mask) { - return qp->device->modify_qp(qp, qp_attr, qp_attr_mask, NULL); + return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); } EXPORT_SYMBOL(ib_modify_qp); @@ -589,11 +814,59 @@ int ib_query_qp(struct ib_qp *qp, struct ib_qp_init_attr *qp_init_attr) { return qp->device->query_qp ? - qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) : + qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) : -ENOSYS; } EXPORT_SYMBOL(ib_query_qp); +int ib_close_qp(struct ib_qp *qp) +{ + struct ib_qp *real_qp; + unsigned long flags; + + real_qp = qp->real_qp; + if (real_qp == qp) + return -EINVAL; + + spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); + list_del(&qp->open_list); + spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); + + atomic_dec(&real_qp->usecnt); + kfree(qp); + + return 0; +} +EXPORT_SYMBOL(ib_close_qp); + +static int __ib_destroy_shared_qp(struct ib_qp *qp) +{ + struct ib_xrcd *xrcd; + struct ib_qp *real_qp; + int ret; + + real_qp = qp->real_qp; + xrcd = real_qp->xrcd; + + mutex_lock(&xrcd->tgt_qp_mutex); + ib_close_qp(qp); + if (atomic_read(&real_qp->usecnt) == 0) + list_del(&real_qp->xrcd_list); + else + real_qp = NULL; + mutex_unlock(&xrcd->tgt_qp_mutex); + + if (real_qp) { + ret = ib_destroy_qp(real_qp); + if (!ret) + atomic_dec(&xrcd->usecnt); + else + __ib_insert_xrcd_qp(xrcd, real_qp); + } + + return 0; +} + int ib_destroy_qp(struct ib_qp *qp) { struct ib_pd *pd; @@ -601,16 +874,25 @@ int ib_destroy_qp(struct ib_qp *qp) struct ib_srq *srq; int ret; - pd = qp->pd; - scq = qp->send_cq; - rcq = qp->recv_cq; - srq = qp->srq; + if (atomic_read(&qp->usecnt)) + return -EBUSY; + + if (qp->real_qp != qp) + return __ib_destroy_shared_qp(qp); + + pd = qp->pd; + scq = qp->send_cq; + rcq = qp->recv_cq; + srq = qp->srq; ret = qp->device->destroy_qp(qp); if (!ret) { - atomic_dec(&pd->usecnt); - atomic_dec(&scq->usecnt); - atomic_dec(&rcq->usecnt); + if (pd) + atomic_dec(&pd->usecnt); + if (scq) + atomic_dec(&scq->usecnt); + if (rcq) + atomic_dec(&rcq->usecnt); if (srq) atomic_dec(&srq->usecnt); } @@ -920,3 +1202,42 @@ int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) return qp->device->detach_mcast(qp, gid, lid); } EXPORT_SYMBOL(ib_detach_mcast); + +struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device) +{ + struct ib_xrcd *xrcd; + + if (!device->alloc_xrcd) + return ERR_PTR(-ENOSYS); + + xrcd = device->alloc_xrcd(device, NULL, NULL); + if (!IS_ERR(xrcd)) { + xrcd->device = device; + xrcd->inode = NULL; + atomic_set(&xrcd->usecnt, 0); + mutex_init(&xrcd->tgt_qp_mutex); + INIT_LIST_HEAD(&xrcd->tgt_qp_list); + } + + return xrcd; +} +EXPORT_SYMBOL(ib_alloc_xrcd); + +int ib_dealloc_xrcd(struct ib_xrcd *xrcd) +{ + struct ib_qp *qp; + int ret; + + if (atomic_read(&xrcd->usecnt)) + return -EBUSY; + + while (!list_empty(&xrcd->tgt_qp_list)) { + qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); + ret = ib_destroy_qp(qp); + if (ret) + return ret; + } + + return xrcd->device->dealloc_xrcd(xrcd); +} +EXPORT_SYMBOL(ib_dealloc_xrcd); |